What is the likely impact of an OPSEC measure on operational effectiveness, if implemented? What is the probably risk to the mission success (effectiveness) if the unit does not implement the measure? What is the probable risk to the mission success, if an OPSEC measure does not work?
Suffocation is a general term to indicate that form of asphyxia, which is caused by deprivation of oxygen, either due to lack of oxygen in the environment or from obstruction of the air-passages.
Fainting is loss of consciousness caused by a temporary lack of oxygen to the brain. Known by the medical term syncope, fainting may be preceded by dizziness, nausea, or a feeling of extreme weakness.